Research On Precision Platform Design And Control Algorithm Based On USM60 Motor

Nowadays, precision machining technology has played a vital role in the field of microelectronics, biotechnology, medical, aerospace, etc. Besides, precision machining and positioning technology have been a hot area of research for several years. Without precision positioning platforms, researchers could not be unable to do a series of related research works. Hence, we design a fully functional control system for two-dimensional precision positioning platform in this paper, which meets requirements of high precision machining and positioning control, and possesses the abilities of decreasing the personal errors and improving automation degree of equipment.For the designed two-dimensional precision positioning control platform in this paper, a series of studies has been conducted for research. Firstly, we design the three-dimensional structure of positioning platform, and according to the designed indexes, we select and install the appropriate hardware, the ultrasonic motors who’s model number is USM60 are chosen as the platform driving unit, and the grating displacement sensors are applied for real-time measurement of the target platform locations. Secondly, we use Lab VIEW software to write the control system programs. Through the MATLAB simulations, we compare and analyze the different type PID control algorithms. Actually, the software is responsible for the data acquisition of the platform location and the rotation control of motors, including human-computer interaction, testing, data processing and display, etc. Afterward, we compare the platform response results using different algorithms mentioned above in terms of response speed, overshoot, steady-state error, etc, and accordingly choose Gearshift Integral PID control algorithm as the optimal control strategy. Finally, we try to analyze and reduce the system errors. Besides, the response results of the designed platform under the condition of different objectives and different load are analyzed, as well as the high control accuracy.Many experiments have showed that, the performance of the designed platform system meets the requirement, making the stable and fast control come true. And the control system has high control precision and convenient operation.